In order to extend the photon energy shift of sensitized upconversion processes based on triplet-triplet annihilation in multicomponent organic systems, we have demonstrated that it is possible to exploit a sequence of consecutive upconversion steps. We have therefore realized an all-optical device for double upconversion: a light blue-shift of more than 0.9 eV was obtained at an excitation irradiance of a few tens of milliwatts per square centimeter. © 2014 American Chemical Society.
Monguzzi, A., Meinardi, F. (2014). Second-Order Photochemical Upconversion in Organic Systems. JOURNAL OF PHYSICAL CHEMISTRY. A, MOLECULES, SPECTROSCOPY, KINETICS, ENVIRONMENT, & GENERAL THEORY, 118(8), 1439-1442 [10.1021/jp5008957].
Second-Order Photochemical Upconversion in Organic Systems
MONGUZZI, ANGELO MARIA;MEINARDI, FRANCESCO
2014
Abstract
In order to extend the photon energy shift of sensitized upconversion processes based on triplet-triplet annihilation in multicomponent organic systems, we have demonstrated that it is possible to exploit a sequence of consecutive upconversion steps. We have therefore realized an all-optical device for double upconversion: a light blue-shift of more than 0.9 eV was obtained at an excitation irradiance of a few tens of milliwatts per square centimeter. © 2014 American Chemical Society.
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